P.P.P.S. For a more precise list of dates of changes back and forth, see https://en.wikipedia.org/wiki/List_of_adoption_dates_of_the_Gregorian_calendar_per_country
Best regards, Tony. On Sun, May 3, 2020 at 8:36 AM Tony Mechelynck <[email protected]> wrote: > > On Sat, May 2, 2020 at 8:05 PM 'Chris Willis' via vim_use > <[email protected]> wrote: > > Known limitation: the input must be an integer (or a String or Float > > which will be converted to an Integer) > 1582, and only _Gregorian_ > > Easter dates are produced. If you want to compute Julian (Orthodox) > > Easter, or Pesach, or the Chinese New Year, or something else, go > > ahead and write them: they are not the purpose of this script, which > > "does one thing, does it predictably, and doesn't try to do a lot of > > other things on the side". > > > > Have fun! > > Tony. > > > > Hi Tony > > > > I'm not sure where you're based. You realise, I expect, that England (and I > > think the USA) didn't change to the Gregorian calendar until 1752. I'm not > > sure whether all western Europe celebrated Easter on the same day despite > > the different dates in the interim. It wd appear not. > > > > regards - Chris > > Well, no one celebrated Easter according to the Gregorian computus > before the Gregorian calendar reform (October 1582); someone (Spain, > Portugal, the Papal states, much of Italy, France (as it existed at > the time), the united Kingdom of Poland and Grand-Duchy of Lithuania, > …) did as soon as 1583; so it doesn't make sense to use that formula > before 1583 but from that date it does. Catholic, Protestant and > Anglican countries and churches adopted the Gregorian calendar at > various dates in October 1582 or later; nowadays they all use it. OTOH > Orthodox churches usually still use the Julian calendar even though > the civil administration in the same countries uses Gregorian, so > their Easter may or may not be on the same day, sometimes it's one > week apart, sometimes it's one lunar month apart, so don't use this > little program for that, or to know when Easter happened in England in > 1600 (if you ask for 1600 you'll get an answer but it will be the date > for, among others, Spain and Portugal). > > If you (or anyone) want to know when your country adopted the > Gregorian calendar, see > https://en.wikipedia.org/wiki/Gregorian_calendar#Adoption_of_the_Gregorian_Calendar > — Austria is not mentioned but from the note at "Yugoslavia" you can > deduce that Austria-Hungary switched over in 1583, shortly before the > "Kingdom of Bohemia" (which approximately corresponds to present-day > Czech Republic). Present-day Netherlands are "Protestant Low > Countries" of course, except that IIRC North Brabant and Limburg were > Catholic and under Spanish rule (for Dutch Flanders I'm not sure); and > beware that Strasbourg changed at a different date from the rest of > Alsace and that neither was part of "France" in 1582. For Lorraine see > the note in the rightmost column of the table at > https://en.wikipedia.org/wiki/Gregorian_calendar#Beginning_of_the_year > > P.S. I live in Brussels, Belgium, which was then part of "Catholic Low > Countries" and under Spanish rule. > > P.P.S. Gauss invented as a child the formula on which this method is a > minor improvement because he wanted to know his birthday: his mother > only remembered that is was "on a Wednesday, one week before Ascension > day". Germany had made the changeover more than 70 years before he was > born, so he used Gregorian computus. > > > Best regards, > Tony. -- -- You received this message from the "vim_use" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php --- You received this message because you are subscribed to the Google Groups "vim_use" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/vim_use/CAJkCKXs6njDvpAJX8uFynXA%3DACTqkQ1Fbo5ubVOQieWuhe3Pmg%40mail.gmail.com.
